Instruments measuring aerosol light absorption, such as the Aethalometer and the Multi-Wavelength Absorbance Analyzer (MWAA), have been extensively used to characterize optical absorption of atmospheric particulate matter. Data retrieved with such instruments can be analysed with mathematical models to apportion different aerosol sources (Aethalometer model) and components (MWAA model). In this work we present an upgrade to the MWAA optical apportionment model. In addition to the apportionment of the absorption coefficient b abs in its components (black carbon and brown carbon) and sources (fossil fuels and wood burning), the extended model allows for the retrieval of the absorption Ångström exponent of each component and source, thereby avoiding initial assumptions regarding these parameters. We also present a new open-source software toolkit, the MWAA model toolkit (MWAA_MT), written in both Python and R, that performs the entire apportionment procedure.

A new software toolkit for optical apportionment of carbonaceous aerosol / Isolabella, Tommaso; Bernardoni, Vera; Bigi, Alessandro; Brunoldi, Marco; Mazzei, Federico; Parodi, Franco; Prati, Paolo; Vernocchi, Virginia; Massabò, Dario. - In: ATMOSPHERIC MEASUREMENT TECHNIQUES. - ISSN 1867-1381. - 17:4(2024), pp. 1363-1373. [10.5194/amt-17-1363-2024]

A new software toolkit for optical apportionment of carbonaceous aerosol

Alessandro Bigi;
2024

Abstract

Instruments measuring aerosol light absorption, such as the Aethalometer and the Multi-Wavelength Absorbance Analyzer (MWAA), have been extensively used to characterize optical absorption of atmospheric particulate matter. Data retrieved with such instruments can be analysed with mathematical models to apportion different aerosol sources (Aethalometer model) and components (MWAA model). In this work we present an upgrade to the MWAA optical apportionment model. In addition to the apportionment of the absorption coefficient b abs in its components (black carbon and brown carbon) and sources (fossil fuels and wood burning), the extended model allows for the retrieval of the absorption Ångström exponent of each component and source, thereby avoiding initial assumptions regarding these parameters. We also present a new open-source software toolkit, the MWAA model toolkit (MWAA_MT), written in both Python and R, that performs the entire apportionment procedure.
2024
17
4
1363
1373
A new software toolkit for optical apportionment of carbonaceous aerosol / Isolabella, Tommaso; Bernardoni, Vera; Bigi, Alessandro; Brunoldi, Marco; Mazzei, Federico; Parodi, Franco; Prati, Paolo; Vernocchi, Virginia; Massabò, Dario. - In: ATMOSPHERIC MEASUREMENT TECHNIQUES. - ISSN 1867-1381. - 17:4(2024), pp. 1363-1373. [10.5194/amt-17-1363-2024]
Isolabella, Tommaso; Bernardoni, Vera; Bigi, Alessandro; Brunoldi, Marco; Mazzei, Federico; Parodi, Franco; Prati, Paolo; Vernocchi, Virginia; Massabò...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1333287
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